Under what circumstances is it safe to climb a tower without a helper or observer?

Tower climbing is inherently dangerous, and accidents can happen regardless of the height or the specific type of work being performed. If a climber experiences a medical emergency, equipment failure, or a fall, they need immediate assistance from someone on the ground who can call for help or perform a rescue. Because the risks of hanging suspended or being injured without assistance are life-threatening, no circumstances justify climbing alone. You should never climb an antenna tower without a qualified helper or observer present.